Processing method of freeze-dried wolfberry fresh fruits

Abstract

The invention relates to a processing method of freeze-dried wolfberry fresh fruits. The processing method is characterized by comprising the following steps: (1) raw material selection: selecting ripened wolfberry fresh fruits, carrying out pre-cooling treatment by sending the wolfberry fresh fruits into a pre-cooling store within 2 h of picking until core temperature of the wolfberry fresh fruits is less than or equal to 10 DEG C; (2) de-waxing treatment; (3) cleaning: washing the wolfberry fresh fruits processed in the step (2) with water, and cleaning with pure water and then draining; (4) negative catalysis: freezing the wolfberry fresh fruits cleaned in the step (3) by fluidized freezing equipment until the core temperature is less than or equal to minus 30 DEG C, and carrying out negative catalysis treatment in an environment of 0 DEG C, and making the core temperature of the wolfberry fresh fruits rise to minus 15 DEG C to minus 18 DEG C; (5) vacuum freeze-drying; and (6) packaging. Through tests, it proves that color of the freeze-dried wolfberry processed by the method is close to the natural color of wolfberry and the color is more stable. By the method, shelf life of the freeze-dried wolfberry product is effectively prolonged by more than one year.

Description

technical field

[0001] The invention relates to a processing method of freeze-dried fresh wolfberry fruit. Background technique

[0002] Lycium barbarum (Lycium barbarum L.) is a precious Chinese herbal medicine with a long history in my country, which has the same origin as medicine and food, and is well-known both at home and abroad. Traditional Chinese medicine believes that wolfberry is flat in nature, sweet in taste, slightly bitter, and non-toxic. It has the effects of nourishing the liver and lungs, improving eyesight, strengthening muscles and bones. With people's attention to the health function of wolfberry and the in-depth study of its pharmacology, modern medical research has proved that wolfberry has the functions of regulating immunity, anti-oxidation, anti-aging, anti-tumor, anti-fatigue, lowering blood fat, lowering blood sugar, lowering blood pressure, nourishing kidney, and protecting the body. Liver, eyesight, beauty, brain, detoxification, protection of ...